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GAS ENGINE GOVERNOR. No. 441,025. Patented Nov. 18,1890.

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No. 441,025. Patented Nov. 18, 1890.

v-i 'bnaooco i i NITED STATES ATENT FFICE.

"WILLIAM S. SHARPNECK, OF CHICAGO, ILLINOIS, ASSIGNOR TO FRANCIS T.VHEELER, OF SAME PLACE.

GAS-ENGINE GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 441,025, dated November18, 1890.

Application filed May 6 1890- Serial No. 350,778. (No model.)

To aZZ whom it may concern.-

Be it known that I, WILLIAM S. SHARP- NECK, a citizen of the UnitedStates, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements inGas-Engine Governors, of which the following is a specification,reference being had therein to the accompanying drawings.

This improvement relates to governors for gas-engines of that classshown in my application No. 339,277, filed February 5, 1890; and itconsists in the peculiar construction, arrangement, and combinations ofparts, hereinafter more particularly described, and then definitelypointed out in the claims.

In the accompanying drawings, Figure 1 shows a central vertical sectionof a governor constructed according to my improvement; Fig. 2, a similarsection at right angles to that shown in Fig. 1. Fig. 3 is an elevationof a cam. Fig. at is a modification.

Referring now to the details of the drawings by letter, A represents ashaft carrying an eccentric B and valve-cam C. D indicates an eccentricstrap and rod connected to a piston E, working in a cylinder F, on theside of which and communicatng with it is a second cylinder G,containing a piston II, carrying rollers h, between which works thegovernorrod I, which is operated by a cam 0, bearing on theanti-friction roller J. The governor-rod I is reduced at 2', so as toform a spring atthat point, and is connected by means of the arm K withthe valve-rod L, at the bottom of which is a valve M, forced down by aspring N. The valve M works in a chamber 0, having a gas-inlet P, which,when the valve is open, allows the gas to pass through said inlet andthrough the valve-seat to the passage Q, where it mingles with the airentering through the air-inlet R, and passes to the cylinder to beexploded.

The governor-rod moves in guides S S, the latter being very much largerthan the rod, so as to allow of said rod moving laterally, ashereinafter explained.

At e is shown avalve in the piston E to admit air to the cylinder Fabove said piston.

On the side of the cylinder F is a reliefcock T, having an arm andpointer t, to indicate on the quadrant-scale U the size of the openin gthrough which air may pass, and thus the speed of the engine isregulated, as it is governed by the amount of air contained in thecylinders.

The operation is as follows: Motion being given to the shaft and theengine remaining at its normal speed, the cam C raises the valve M bymeans of the rods I L and arm K, which admits gas to the cylinder. Atthe same time the piston E is acting to compress air into the cylindersF G, against the piston H, which is held in place by the spring '6 inthe rod I, which is so arranged as to normally keep the lower end ofsaid rod I in position to be acted on by the cam C. Should,

however, the engine begin to run too fast, the

air would be compressed intothe cylinders E G, and the piston II wouldbe forced outward, thus carrying the lower end of rod I and its roller Jon one side and out of the way of the cam C, as shown in dotted lines,so that the latter would not raise the valve M, and no gas would pass tothe cylinder of the engine, which of course would then begin to slackenits speed, and when it resumed its normal speed the piston H and governor-rod I would return to their usual position and the cam C wouldoperate the valve again.

In the modification shown in Fig. 2 the action depends on the formationof a partial vacuum in the cylinders E G, which draws the piston Hinward and moves the rod I and its roller J in the opposite direction tothat shown in Fig. 1, but still clear of the cam C. In this case valvein the piston E should open downward, as shown in Fig. 4, instead ofupward, as in Fig. 1.

It is obvious that a regulating device similar to that shown in Fig. 2may be employed on this style of governor also.

What I claim as new is- 1. A governor having two pistons, the first ofwhich operates on the air between the two, and a spring governor-rodoperating on the second piston against the action of the first,substantially as described.

2. A governor having two pistons, an eccentric for operating one ofthem,.a spring governor-rod for'operating the second piston in one'direction, and a cam for operating, the governor-rod, substantially asdescribed.

a. A governor having two pistons, an eccen- 'tric for operating one ofthem, a spring governor-rod for operating the second piston in onedirection, a valve operated by the governor-rod, and a cam for operatingthe same, substantially as described.

4. The combination in a gasengine governor, of a cylinder F, areciprocating piston E working therein, a cylinder G, a piston H settherein, a spring-rod I, connected with said piston H, a cam for givingsaid rod a 1ongitudinal motion, and valve M, connected with thegovernor-rod, substantially as described.

